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t
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MC34064 MC33064
I
Product
Preview
I
UNDERVOLTAGE
SENSING
CIRCUIT
The MC34064 is an undervoltage sensing circuit specifically designed for use as a reset controller in microprocessor-based
systems. voltage It offers detection the with designer a single an economical external solution for low
The MC34064 features a trimmed-in-package bandgap reference, and a comparator with precise thresholds and built-in hysteresis to prevent erratic reset operation. The open collector reset output is capable of sinking in excess of 10 mA, and operation is guaranteed down to 1.0 volt input with low standby current. These devices are
resistor.
packaged in 3-pin TO-226AA and 8-pin surface mount packages,
,),,$
Applications include direct monitoring of the 5.0 volt MPU/logic ,,$:.$ power supply used in appliance, automotive, consumer and$~iv ,,*.:$\ .'~:~} industrial equipment. >.,$$:SN , ,~< Temperature Compensated Refer~~~$ "+.] . Trimmed-In-package ,.,:.
q
Precise
Comparator
Thresholds
Guaranteed
Over
Temperature .
q
Comparator Reset Output
Hysteresis Capable
Prevents of Sinking
Erratic
Reset
$,, ~ it>,. \ ~$} }.~t$ ....,.,, \ :.,.. ~.~~! . -'?\:{::, i\:1
23
!
1
PIN 1. RESET 2. INPUT 3. GROUND
in ExcessO~~ 10'~rnA .!+.) . Internal Clamp Diode for Discharging Del>% G&pacitor .,:$/ , f:$>,..,,,,,.<,..~,~, . Guaranteed Reset Operation with 1~$~:&~~~hput .'.' ?:,>7: .,..' .$;,,.: . .>.. . Low Standby Current .*&\,:$*:~, . ."'+~ q Economical TO-226AA and Sq{%;&ount Packages ., k;,<~:$ "$$:j) *.,.>>4`:~.,$! ?{l, ..$ $$ ..,. .t: ..!$.Y,`~$,~,,+,,$ ?l ,, ~,:, !;. ~ ~,i ~,:?t\f$!,:t, ~. ltt~$~,:el;-' . .~:,: "'.,s !~i~..,., .. .. . ,,$' ,,>+; .,:$~ ,!.i $*.i\, ,:.. ..... ;\,~%i :;* ,>, J~\,&$~#RESENTATIVE BLOCK DIAGRAM ,J$. .. :,$ w. ~:~;.y.~, ... tk#*$}nput Q 2 (2) ,}"`:" , Reset /?: "~>~$. ., $$ ~ $$\h, .,$. , $:.~hb ;, ,>,+ ,,:") 1 (1) `[+.> .,!.:, .. "$~,$>,:, \... ~s~k! ~ ;$i:,>$,+. \ .?. ~{:,i,$+,.. ~ ,~~ ?i!~
D SUFFIX PLASTIC PACKAGE CASE 751-02 SO-8
8 \e&
PIN 1. 2. 3. 4.
RESET INPUT NC. GROUND
5. 6. 7. 8.
N.C. N.C. N.C. N.C.
1.2 Vref 1 .[ Gnd d 3 (4) * a- + 1 _ Sink Only Positive True Logic
L
I
ORDERING INFORMATION
Device
MC34064D-5 MC34064P-5 MC33064D-5 - 40C to + 85C MC33064P-5 Plastic TO-226AA
INC., 1988
1
Temperature Range Wc to + 70c
Package Plastic SO-8 Plastic TO-226W Plastic SO-8
Hn numbers adjacent to terminals are for the 3-pin TO-226AA package. Pin numbers in parenthesis are for the D suffix SO-8 package.
his document contains information on a Droduct under development. to change or discontinue this produti without notice.
Motorola reser"es the riaht -----
OMOTOROM
NP220
.,.
+
MAXIMUM
RATINGS
Rating Symbol yn Value -1.oto 10 Unit v
Power
Input Supply Voltage
Voltage
Reset Output Reset Output
Clamp
Vo
Isink Pin 1 to 2 (Note 1) IF
10
Internally
Limited
v
mA *,\ *'X,l, $J,$<,.,'$:. ,,.,'~ `!i.,, 1 , +ts., ~~$b.`1$,>. ,,:\>.
Sink Current Current,
Diode Forward
100
mA
Power Dissipation and Thermal Characteristics P Suffix, Plastic Package Maximum Power Dissipation @ TA = 2wC Thermal Resistance, Junction to Air D Sutix, Plastic Package Maximum Power Dissipation @ TA = 2TC Thermal Operating Resistance Junction to Air
pD ROJA pD ROJA TJ TA
625
200
mW
`cm
625
mW
200
+150
`CM
Oc
.,,4.b' ,f,, ~, .:;. *!+,<\\ ,:Y \i\l X:%k ..,$., ~?,:. ,J\;t,\\ \ .1:. ,,.3@,.,~\. ,, ,.$.. `$ . ~ .. .'+,*
....?s4-.:?, ,3{ ~;)h,k, `
,:.''::,:`" ,,>$:t+,, .,. ~ i?!,,."4f\;,) ..:, ~ <./$,,+ ,,.:? .: ~,lx,~.::." *$! :~' *,. ` ....::,,
Yt;\ .p,:Jk$;
Junction
Temperature Temperature
Operating Ambient MC34064 MC33064 Storage Temperature
Oto +70 -40to +85 Range For typical Tstq -65to +150 .. crating ambient temperature
ELECTRICAL CHARACTERISTICS
values TA = 25C, for rein/ma
range that applies [Notes 2 and 3]. Characteristic COMPARATOR Threshold Voltage High State Output (Vin Increasing) Low State Output (Vin Decreasing) Hysteresis .V .. ~, 1.$..+ ,,;!" , , ~'! ,:~<::,+',..i, ... vlH `.*.)* ~>;:.:+ vlL ,*\\+ \.ij ~,:. ~ vH Max Unit
v
4.5 4.5 4.61 4.59 4.7 4.7
RESET OUTPUT
Output (~n Sink Saturation =
4,0 V, lsi~k = 8,0 mA)
(Vin = 4.0V, [sink = 20 mA) (Vin = 1.0 V, Isink = 0,1 mA)
~ Output Off-State Leakage (~n,
Clamp Diode Forward
,t.i,y \ \ ~h $?,. ,bi ` l:;!~,i]t.t.. .%, t::,;:s ... . ,,+<> \ .:*, \'i\?<,\j,t {$, ,\.,,~,> ~q, .~. ,8::
~, `%fi!
.,{., .,?,1,. ~ \;.\.~` ,4 ,C.,..\*{?+:,,
,1.,. .:J$\F\ ,.\\,,..:?., `:>?,
0,01
0.02
0,05
vOL
v
-- --
-- Isink 10 --
0,6
0,46
0.15 -- 27
1,0 0.4
0.1 60 0.5
1.2
mA PA
v
R@W.~'!.&$
V)
10 mA)
10H
vF
0.02
0.9
TOTAL DEVICE Operating
Quiescent
Voltage<$~,,jr~~ <- -.$i :
2 (IF =
`~+?t~~, ~ `i... ,?*.. &n
Iin
Input Voltag@#qnge:'@
Input Curr#~tq.#V= 5.0 V)
1.0 to 6.5
--
--
390
--
v
PA
,,,~' ; `\+t::r>,~:@ NOTES: I* -. dissipation limits must he nhser"ed 1. Maximum pa'~~power
2. Low duty * Mlse techniques
i
500
(M)
MOTOROLA
semiconductor
Products /n..
4
FIGURE
1 -- RESET OUTPUT VOLTAGE versus
INPUT VOLTAGE
FIGURE 2 -- RESET OUTPUT VOLTAGE INPUT VOLTAGE 5.0
versus
10
1
I
RL=lOkto~n TA = 25C 4.0 ~
>6
o
1.0 I
I
I
I
L ..
.3.
,
\\.
.>.
I
I
i
0
0
2.0 4.0 6.0 8.0 10 ~", INPUT VOLTAGE (V)
FIGURE 3 -- COMPARATOR THRESHOLD versus TEMPERATURE
VOLTAGE
7"
b
&
\
Ifl A
Av
TA = +2YC,
5
+ 85C
>
4.580
4.570
0
0
2,0
4,0
6.0
8.0
10
~n, INPUT VOLTAGE (V)
FIGURE 6 -- CLAMP DIODE FORWARD versus VOLTAGE
CURRENT
o
10
20 [Sink, SINK CURRENT (mA)
30
40
0
0.4
0.8 VF,FORWARD VOLTAGE (V)
1.2
1.6
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,.
r.
1---&
-------
---
1N756
1
I I
=
1)
I
1
Test lLine Regulation Load Regulation Output Ripple Efficiency 1 l~n=ll,5V
Conditions to14.5V,10=50mA = OmAto50mA = 50mA = 50mA
Results 135mv 12 mV 60 mVp-p 77~0 I
Vin = `12.6 V,10 Vin = 12.6 V,10 Vin = 12.6 V,10
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OUTLINE DIMENSIONS
\ND"E ARE OATUMS AND NOTES: 1, CONTOUR OF PACKAGE BEYOND ZONE ,'P' IS UNCONTROLLED. 2, DIM "V APPLIES BEWEEN "D& "S' APPLIES BEWEEN "H AND "L', DIM "~& 12,70mm JRFACE. !SIONING AND TOLERANCING PER ANSI
,,?
*.. \?.:,,, "~ >::}> `J:.$ta *,{ `.<(?{ !~';;,, ~.,.,.
`?{$.
3, CONTROLLING OIM: MILLIMETER, 4, DIMENSION "W AND "W DO NOT INCLUOE MOLO PROTRUSION, 5. MAXIMUM MOLD PROTRUSION 0,15 (0,006)PER SIOE.
(0.W) FROM SEATING PLANE. LEAD DIM IS UNQONTROLLEOIN "H & BEYONO 12.70mm
Motorola
rasarves
the right
to make changes of others. Motorola
without and@
further
notice
to any products or circuit trademarks
herein
to improve herein:
reliability, neither
function does
or design. Employment
Motorola
does its
not asaume patent rights Affirmative
any liability Action
arising
out of the application
or use of any product are registered
described
it convey
any license
under
nor the rights Employer.
of Motorola,
Inc. Motorola,
Inc. IS an Equal
Opportunity/
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:--. --.-. ~,,
. ..
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it,~
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Semiconductor
BOX 20912. PHOENIX,
Products
ARIZONA 85036.
Inc.
A SUBSIDIARY OF MOTOROLA INC. --
YWU
Order this data sheet by MC34064/D
o
Advance Information
UNDERVOLTAGE SENSING CIRCUIT
The MC34064 is an undervoltage sensing circuit specifically designed for use as a reset controller in microprocessor-based for low systems, It offers the designer an economical solution voltage detection with a single external resistor. The MC34064 features a trimmed-in-package bandgap reference, and a comparator with precise thresholds and built-in hysteresis to prevent erratic reset operation. The open collector reset output is capable of sinking in excess of 10 mA, and operation is guaranteed down to 1.0 volt input with low standby current. These devices are packaged in 3-pin TO-226AA and 8-pin surface mount packages. ,. Applications include direct monitoring of the 5.0 volt MPU/logic , $~ power supply used in appliance, automotive, consumer and.;{~r"$ \$\, .+.,, industrial equipment. +t.>$ :.J,*$:.iit.< q Trimmed-In-Package Temperature Compensated Refere~~ "a}.:.
q
MC34064 MC33064
comparatorThresholdof4.6v at29C
8
c>+,`Yir ., q precise Comparator Thresholds Guaranteed Over I:y:$:c !>..., :: Temperature ..,:,\~. . Comparator Hysteresis Prevents Erratic Re~@~ " o Reset Output Capable of Sinking in Exces%.o~~O mA .$, ~ t.+, ,,.~~j q Internal Clamp Diode for Dischargin~,~~~~~~apacitor
q q q
~:~ ~> \ l.\\:. $J.tht .,..,&@?
1 3
PIN 1. RESET 2. INPUT 3. GROUND
Guaranteed
Reset ,Operation with ~$~$~@*t Input ,:N T..J. . *`+?1,,,.,, ~ ,,\\ Low Standby Current ,,,,,...,..w~\\ -x ~ ,--,, ,. !,t.),,,, . Economical TO-226AA and SQ-'@S'firface Mount Packages ,..,., `,.,,.,43 ..$ ,.,,. ,:y ~:..k !: \\i$.l.}. *.:$,t~ $\+i>, .... `. :<.,, . . ~+ ,.\:, `,,! f~~.~ ,,~:.,tt.,< ` .:~pi,,i.." :i-+ .+, > ,,., .,\. ,.'. ,(>!,,if .i$~' ,,;. ~.;'~'$+x:~" ,\~... >. y,l:~%ESENTATIVE BLOCKDIAGRAM ",$.$, ;:; $.!+.., .-''3.?:.,$ :~:& e+%.> twput o 2 (2) [~:,
- ?~ ~{ %,?, .:$
D SUFFIX PUSTIC PACKAGE CASE 751-03 SO-8
8
\~&
7
PIN 1. 2. 3. 4. 5. 6. 7. 8.
RESET INPUT N.C. GROUND N.C. N.C. N.C. N.C.
,4,<. ..~:~~,, ,~!\..
Reset 1)
S.;a)> --$~t, <,"?' .$:* $:/~,,.?$.:$. , ~*\. ,., &,m,*y ,..,. ..>. .:<:%.. \*
o 1 (1) -- U4
$ 4 I
$ 1.2Vref
1 Gnd 43(4) o -
s-- +
m
-..
I ms document contains Information subject to change without notice.
I
_ Sink Only
Positive True Logic
ORDERING INFORMATION
Device MC34064D-5 O"c to + 70c MC34064P-5 MC33064D-5 - 40C to + 8YC MC33064P-5 Plastic TO-226AA Temperature Range Package Plastic SO-8 Plastic TO-226M Plastic SO-8
I
Pin numbers adjacent to terminals are for the 3-pin TO-226W package. Pin numbers in parenthesis are for the D suffix SO-8 package.
on a new product. Specifications and information
herein are
QMOTOROU
INC., 1989
ADI 1483 (Replaces NP220)
MAXIMUM
RATINGS
Rating Symbol ~n
Vo.
Value -l.o tolo
10
Unit
v v
Power Input Supply Voltage Reset Output Voltage Reset Output Sink Current (Note 1) Clamp Diode Forward" Current, Pin 1 to 2 (Note 1) Power Dissipation andTh,ermal P Sutix, Plastic Packaga Maximum Thermal Power Dissipation Resistance, Junction Characteristics @ TA = 25C to Air @ TA = 25C to Air
Isink IF
Internally Limited 100
mA
mA
pD RgJA PD ROJA TJ TA
625
mW
200
625
"CM
mW
D Suffix, Plastic Package Maximum Power Dissipation Thermal Resistance Junction Operating Junction Temperature Operating Ambient Temperature MC34064 MC33064 Storage Temperature Range
200
+150 Oto +70 -40to +85
"CM
`c `c
Tstq
-65to
+150
"c ~:$'q . ,,) $
. .- ..: .+\,.:,> {..{,.
TA is the operating ambient temperature " Min Typ Max Unit
ELECTRICAL CHARACTERISTICS
For typical values TA = 25C, for min/m~~)~lues range that applies [Notes 2 and 3]. ,,:~}'
Characteristic COMPARATOR Threshold Voltage High State Output (Vin Increasing) Low State Output (~n Decreasing) Hysteresis
RESET OUTPUT
Output Sink Saturation (Vin = 4,0 V, lsi~k = 8,0 mA)
(Vin 4,0 lsi~k2.0 mA) = V, =
(~n
Output
"~~$:; >?:; ~$. "'!$.XL,,, )f;:,.,
~~i?::.~ $
.,+.::> * .,<:,$ .~*: b>~. ..~i,,~,,,! ` ,'~l. ~
,,y~~ ",.).`:;*J. `.l,~lt) .t?
+.i,.k 3., ,:+,>&*7/~~+:~*, `.. .,.,,. >.
VOL
.,:? . ,,\\& ? ,.,*Y ?{*,
<~~!~$~hboi ,,< :$. (i\,:t ~><:x:.::.t,,s,,. ,\ ~$,, , ~' ~ ":.:.;, l',~.~t! ,><. .,.." ~~t.ii VIH ..}t.. ,, VI L VH
v
4.5 4.5
0.01
4.61 4.59
4.7 4.7
0.02
0.05
v
--
0,46 .0.15
-- 27 0.02
0.9
--
-- Isink IOH
VF 10
1.0"
0.4
0.1
= 1,0 V, Isink = 0.1 mA)
Sink Current
-?,2
(Vin, Reset = 4~ V).& "'4"
60
0.5 1.2
mA PA
v
Output Off-State Leakage (Vin, ~~se {~='5.O V) Clamp Diode Forward Volta@.$k%#:to "~~~,: *,. $ TOTAL DEVICE ..*** ~: Operating input Volt~@$~a,@ge 2 (IF = 10 mA)
--
0.6
Vin Iin
1.0 to 6.5 --
-- 390
--
v
Quiescent Input ~~~t''~in = 5.o V) ,.,,:.:,, ~ ..,,.. ? .,$), NOTES: `"'~i. '+.::, power dissipation limits must be observed. 1. Maximu~;~@k~e
2. Low ~@
500
PA
c~~e pulse techniques are used during teat to maintain junction temperature VO"Cfor MC34064 Thigh = +70C for MC34064 3. T1.q$$ %/++., *y = + a5C for MC33064 ~y ~;.;:?.~: - 400c `or MC33064 ~ ~itt~},h ..3\,\, ,~< \ `\;,,:, ~YJ:i*\\., J*,,:.. , .!!,< .!~';
as close to ambient aa possible.
L@
MOTOROLA
Semiconductor Products /nc. 2
FIGURE 1 -- RESET OUTPUT VOLTAGE INPUT VOLTAGE
versus
FIGURE 2 -- RESET OUTPUT VOLTAGE INPUT VOLTAGE 5.0 I [ RL= 10kto~n TA = 2YC
versus
10
RL= 10kto~n TA = 2YC
I
I I
I *
I
I
I
I
0
o
2.0
4.0
6.0
8.0
10
~",INPUTVOLTAGE (V)
FIGURE 3 -- COMPARATOR THRESHOLD versus TEMPERATURE 4.630
VOLTAGE
I
I
TA = +25C\
4.570 --
0
2.0
4.0
6.0
8.0
10
Vin, INPUT VOLTAGE (V]
FIGURE 6 -- RESET DELAY TIME
90?
109
5.0 v-
0
10
20 Isink, SINK CURRENT (mA)
30
40 4.0 v 100 ns/Div.
MOTOROLA
@
Semiconductor Products Inc.
3
J!*J
O*J
FIGURE 7 -- CLAMP DIODE FORWARD CURRENT versus VOLTAGE
i
I
I
I
I
A
I
TEST DATA VH (mV) ------ -- Avth (mV) RH (0) RL (kO)
20 51
o 3.4
0 10
0 1.5
1'4
: ?1
::
10 10 16 16 34
:
30 30 47 47 100
x
2.7 1.5 2.7 1.5 2.7
---- =
-- Avth(lower) Where: = 340 RH x 1o-6 Q < 10kQ RH <150 RL>
112 100 164 190
1.5kQ,
Comparator hysteresis can be increased with the addition of resistor RH. The hysteresis equation has been simplified and does not account for the change of input current Iin as VCC crosses the comparator threshold (figure 4). An increase of the lower threshold AVth(lower) will ba observed due to Iin which is typically 340 KA at 4.59 V. The equations are accurate to * IOY. with RH less than 150 Q and RL between 1.5 kQ and 10kQ.
w
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4
+ r
Power supply -- ! =
FIGURE 10 -- VOLTAGE MONITOR
FIGURE 11 -- SOLAR POWERED BATTERY CHARGER
1
2 (2) ------
$
_
l.Ok
I
I
i
Vin = 11.5 v to 14.5 v = 4.7 k = ------. 1 -- --A
MPSW51A
25 KH --
,\:
Test Line Regulation Load Regulation Output Ripple
Conditions Vin = 11.5 Vto14.5V, ~n I ~n [0 = 50mA
Results 35 mV 12 mV 60 mVp-p
= 12.6 V, 10 = O mA to 50 mA = 12.6 V, 10 = 50 mA
Overheating of the logic level power MOSFET due to insufficient gate voltage can be prevented with the above circuit, When tha input signal is below the 4.6 volt threshold of the MC34064, it's output grounds the gate of the L2 MOSFET.
m
A
2 (2)
I
&
1 (1)
--
5
+
1.2 Vref
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P SUFFIX
PLASTIC PACWGE
CASE
29-04
NOTES: 1,CONTOUROFPACKAGE BEYONDZONE"P Is
UNCONTROLLED,
2.DIM"V'APPLIES EWEEN "H"ANO "~,DIM B
"D"& "S"APPLIES E~EEN"~ & 12.70mm B (0.5") SEATING FROM PLANE. LEADDIMIS UNCONTROLLEDIN"H & BEYOND 12,70mm (0.WIROM SEATING F PLANE. 3.CONTROLLING DIM: INCH,
@lTl +10.25(0,0101
B @lA
o]
DIM A B c D F G J K M P R
MILLIMETERS MIN MAX 4.80 5,00 3.80 4,00 1.35 1,75 0.35 0.49 0.40 1.25 121 BSC 0.18 0.25 0,10 0.25 0 7" 5,80 6,20 0.25 0,50
INCHES MIN MAX 0.189 0.196 0.150 0.157 0,054 0.068 0.014 0.019 0.016 0,049 0.050 BSC 0.007 0.009 0.004 0.009 o" 7" 0.229 0.244 0,010 0.019
Motorola reserves the rig does not assume any Iiat under ita patant rights nor Ine rlgma OTotners. MOtOrOla products are not intended for surgical implant into the bodv or intended to support or auat: whereupon Motorola shall determine availability and suitability of ita prod trademarks of Motorola, Inc. Motorola, Inc. is an Equal Employment Oppo
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BOX 20912
YCUM q
PHOENIX,
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85036
q
A SUBSIDIARY
OF MOTOROLA
INC.
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22753-1PRIwD IN USA 3-89 lWERUL LITI!O C6Z966 5,000

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